Modern Analytical Ultracentrifugation, Todd M. Schuster and Thomas M. Laue, 1994. Birkhauser, Boston.

Current Protocols in Immunology, Unit 18.8:  Measuring Protein-Protein Interactions by Equilibrium Sedimentation, 2004.  John Wiley & Sons, Inc.

Laue, T.M. and Stafford, W.F. (1999) Modern Applications of Analytical Ultracentrifugation, Annu. Rev. Biophys. Biomol. Struct., 28:75-100.

Protein-Ligand Interactions:  hydrodynamics and calorimetry, ed. Stephen E. Harding and Babur Z. Chowdry, 2001.  Oxford University Press.  (See especially chapters 4 and 5.)

Lebowitz, J. et. al. (2002) Modern analytical ultracentrifugation in protein science:  Atutorial review, Protein Science, 11:2067-2079.